AllNews'Ice-age Cycles' - 1 News Result(s)Ocean Currents Behind Change in Ice Ages?World News | Indo-Asian News Service | Monday June 30, 2014 Climatologists have long tried to explain why ice-age cycles became longer and more intense some 900,000 years ago, switching from 41,000-year cycles to 100,000-year cycles. www.ndtv.com'Ice-age Cycles' - 1 News Result(s)Ocean Currents Behind Change in Ice Ages?World News | Indo-Asian News Service | Monday June 30, 2014 Climatologists have long tried to explain why ice-age cycles became longer and more intense some 900,000 years ago, switching from 41,000-year cycles to 100,000-year cycles. www.ndtv.comYour search did not match any documentsA few suggestionsMake sure all words are spelled correctlyTry different keywordsTry more general keywordsCheck the NDTV Archives:https://archives.ndtv.com